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Last updated: 20 October 2020
Statuts:Enquête Officielle
Date:mercredi 3 février 1993
Heure:13:27
Type/Sous-type:Silhouette image of generic C130 model; specific model in this crash may look slightly different
Lockheed L-100-20 Hercules
Compagnie:Lockheed
Immatriculation: N130X
Numéro de série: 4412
Année de Fabrication: 1971
Heures de vol:6708
Moteurs: 4 Allison 501-M71K
Equipage:victimes: 7 / à bord: 7
Passagers:victimes: 0 / à bord: 0
Total:victimes: 7 / à bord: 7
Dégats de l'appareil: Détruit
Conséquences: Written off (damaged beyond repair)
Lieu de l'accident:Marietta-Dobbins AFB, GA (MGE) (   Etats-Unis d'Amérique)
Élévation des lieux de l'accident: 326 m (1070 feet) amsl
Phase de vol: Au roulage (TXI)
Nature:Test
Aéroport de départ:Marietta-Dobbins AFB, GA (MGE/KMGE), Etats-Unis d'Amérique
Aéroport de destination:Marietta-Dobbins AFB, GA (MGE/KMGE), Etats-Unis d'Amérique
Détails:
The Lockheed engineering testbed was used to evaluate the fly-by-wire rudder actuator and the ground minimum control speed (VMCG). During the final high-speed ground test-run, the aircraft accidentally veered left and became airborne. The Hercules climbed to 250 feet and crashed.

Probable Cause:

PROBABLE CAUSE: "Disengagement of the rudder fly-by-wire flight control system resulting in a total loss of rudder control capability while conducting ground minimum control speed tests. The disengagement was a result of the inadequate design of the rudder's integrated actuator package by its manufacturer; the operator's insufficient system safety review failed to consider the consequences of the inadequate design to all operating regimes. A factor which contributed to the accident was the flight crew's lack of engineering flight test training."

Accident investigation:
cover
Investigating agency: NTSB
Status: Investigation completed
Duration: 1 year and 1 months
Accident number: ATL93MA055
Download report: Summary report

Sources:
» Flight International 6-12 April 1994 (12)
» Air Safety Week 8 February 1993 (p. 4, 5)
» Flight International 10-16 February 1993 (6)
» ICAO Adrep Summary 1/95
» NTSB Safety Recommendation A-94-101
» Scramble 165


Photos

photo of Lockheed-L-100-20-Hercules-KAF-318
accident date: 03-02-1993
type: Lockheed L-100-20 Hercules
registration: KAF-318
 

Plan

Les informations ci-dessus ne représentent pas l'opinion de la 'Flight Safety Foundation' ou de 'Aviation Safety Network' sur les causes de l'accident. Ces informations prélimimaires sont basées sur les faits tel qu'ils sont connus à ce jour.
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